Wednesday, July 8, 2026

Patent intelligence · US

US 9855303

Compositions and methods

granted A61KA61K35/37A61K35/74A61K35/741
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 11
Applicant portfolio 36
Patent details — US 9855303
Jurisdiction
US
Status
granted
Grant date
Jan 2, 2018
Expiration
Dec 28, 2037
Claims
26
CPC classes
A61K, A61K35/37, A61K35/74, A61K35/741
View on Google Patents ↗

Quick answer

US 9855303 (Compositions and methods) is held by Seres Therapeutics, Inc.. Status: granted. Granted Jan 2, 2018. Expires Dec 28, 2037 (11 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
26
CPC classes
A61K, A61K35/37, A61K35/74, A61K35/741, A61K35/742, A61K35/744

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Frequently asked questions

What is US patent 9855303?

US 9855303 (Compositions and methods) is held by Seres Therapeutics, Inc.. Status: granted. Granted Jan 2, 2018. Expires Dec 28, 2037 (11 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 9855303?

Seres Therapeutics, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 36 pharmaceutical patents for this assignee.

When does US 9855303 expire?

Our index shows an expiration date of Dec 28, 2037 (11 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.